http://oceans.mit.edu America/New_York America/New_York America/New_York 20171105T020000 -0400 -0500 20181104T020000 EST 20180311T020000 -0500 -0400 EDT 83rrcno47f5rumaeclvp2d6114@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150505T150000 20150505T160000 Clark 507 0 Amala Mahadevan, WHOI. ‘Eddy-driven subduction of particulate organic carbon and oxygen from the North Atlantic spring bloom ‘. Clark 507. ub84g3og21o7js7ossrvn7saig@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography The Brazil Current is probably the least known and explored of the western boundary currents of the world ocean. In this talk, we offer an overview of research carried out at the Oceanographic Institute of the University of São Paulo (IOUSP) on this current system's pattern, water masses and mesoscale variability. By blending small quasi-synoptic data sets, mooring data and simple process-oriented modeling, we propose an extension of the seminal work by Henry Stommel (1965). The BC system is described from its site of origin (~15S) to where its starts to separate from the continental margin, south of 35S. 20150512T150000 20150512T160000 Clark 507 0 Ilson da Silveira, Universidade de São Paulo. ‘The Brazil Current revisited: Beyond Stommel’s (1965) pioneering insights’. Clark 507. giej4fotj8s93pcbu6239r3et8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography The impact of the North Atlantic Oscillation (NAO) on the Atlantic Meridional Overturning Circulation (AMOC) and large-scale climate is assessed using simulations with three different climate models. Perturbation experiments are conducted in which a pattern of anomalous heat flux corresponding to the NAO is added to the model ocean; in companion experiments no such flux is added. Differences between the experiments illustrate how the model ocean and climate system respond to the NAO. A positive phase of the NAO tends to strengthen the AMOC by extracting heat from the subpolar gyre, thereby increasing deepwater formation, horizontal density gradients, and the AMOC. The flux forcings have the spatial structure of the observed NAO, but the amplitude of the forcing varies sinusoidally in time with distinct periods varying from 2 to 200 years. The response of the AMOC to NAO variations is small at short time scales, but increases up to the dominant time scale of internal AMOC variability (20-30 years for the models used). The amplitude of the response of the AMOC, and associated oceanic heat transport, is approximately constant as the timescale of the forcing is increased further. In contrast, the response of other properties, such as hemispheric surface air temperature or Arctic sea ice, continues to increase as the time scale of the forcing becomes progressively longer. The larger response of temperature and sea ice at progressively longer time scales is associated with an increased impact of radiative feedback processes. The impact of the NAO-induced AMOC variations extends to the Southern Ocean as well, inducing variations in surface and interior ocean properties. This relationship results in some skill in decadal prediction of aspects of the Southern Ocean. 20150519T150000 20150519T160000 Clark 201 0 Tom Delworth, GFDL. ‘The impact of the North Atlantic Oscillation on climate through its influence on the Atlantic Meridional Overturning Circulation’. Clark 201. 6ccmrqqsetuqttr3b0u5iohm7o@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150526T150000 20150526T160000 Clark 507 0 Ken Brink, WHOI. ‘Continental shelf baroclinic instability with fluctuating wind forcing’. Clark 507 1mhk2k6n73243epihbavrpp13c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150602T150000 20150602T160000 Clark 507 0 Uriel Zajaczkovski, Scripps. ‘Southern Ocean eddies: propagation, energy sources and the role of topography’. Clark 507. poltmskhe21j1ic87v76rhesf8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150609T150000 20150609T160000 Clark 201 0 Young-Oh Kwon, WHOI. ‘Year-to-year re-outcropping of Eighteen Degree Water in an eddy-resolving ocean simulation’. Clark 201. daes58s3elgu9tgm8pvh74aa30@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150616T150000 20150616T160000 Clark 507 0 Tom Connolly, WHOI. ‘Surface waves and exchange across the inner shelf’. Clark 507. 41i45du12hj9p5elhg8b88rab8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150618T140000 20150618T150000 Clark 201 0 Sanjeeva Balasuriya, University of Adelaide. ‘Flow barriers and flux in unsteady flows’. Clark 201 rt5o22uqg1jm1jk48nkek6b99c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150623T150000 20150623T160000 Clark 507 0 Larry Pratt, WHOI. ‘Resonant stirring and mixing in an idealized model of an eddy’. Clark 507. 54vndurckkf737eknmjqml0j58@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150625T140000 20150625T150000 Clark 507 0 Pierre-Yves Passaggia, UNC. ‘Bifurcation and global stability analysis of horizontal convection.’ Clark 507 ehlikb3q0cnm611oo4gq9jvj70@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150630T150000 20150630T160000 Clark 507 0 Raffaele Ferrari, MIT. ‘Turning ocean mixing upside down’. Clark 507. v64t7cuibqlarnl27an3i6beb4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150707T150000 20150707T160000 Clark 507 0 Tom Sanford and Ren-Chieh Lien, APL-UW. ‘The Hunt for the Elusive Vortical Mode’. Clark 507 8ruuglad8cl6d9snsskla1o4d8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography Mixing in near-integrable flows with a clear separation of time or spacial scales is notoriously difficult to achieve. In many flows the intrinsic symmetries create invariant surfaces that act as barriers to chaotic advection and mixing. Thus, a key to efficient mixing is to add to the original (symmetric) flow a certain kind of perturbation that destroys those symmetries. In the present talk we discuss a quantitative long-time theory of mixing due to the presence of resonances in 3-D near-integrable Stokes flows. The resonance phenomena, such as scattering on resonance, capture into resonance, and separatrix crossings, involving different components of the original flow and the perturbation may destroy the invariant surfaces, paving a way to the large-scale mixing in a big fraction of the fluid flow. We explain the extend and the rate of mixing in terms of the evolution of the adiabatic invariants of the system. We show that when the leading phenomenon is scattering on resonances or separatrix crossings, the resulting mixing can be described in terms of a single 1-D diffusion-type equation, with parameters of the diffusion equation defined by the averaged statistics of a single passage through resonance or separatrix. 20150709T140000 20150709T150000 Clark 201 0 Dmitri Vainchtein, Temple University. ‘Resonances and Mixing in Multi-scale Flows’. Clark 201 k2a6v78es75p0tkb85oep69808@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150714T150000 20150714T160000 Clark 507 0 Laura Slivinski, WHOI. ‘Applications of Lagrangian Data Assimilation to Katama Bay, MA’. Clark 507. trl8okotv6pj6iin45vtmlc4jo@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150716T140000 20150716T150000 Clark 201 0 Alex Soloviev, Nova Southeastern U. ‘3D Dynamics of the Near-Surface Layer of the Ocean: Field and Computational Fluid Dynamics Experiments’. Clark 201 dmbu7fjup8o2vqslmj9ambf1j4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography The interaction between an Antarctic Circumpolar Current-like channel flow and a continental shelf break is considered using eddy-permitting simulations of a quasi-geostrophic and a primitive equation model. The experimental setup is motivated by the continental shelf of the West Antarctica Peninsula. Numerical experiments are performed to study how the width and slope of an idealized continental shelf topography affect the characteristics of the flow. The main focus is on the regime where the shelf break width is slightly greater than the eddy scale. In this regime, a strong baroclinic jet develops on the shelf break due to the locally stabilizing effect of the topographic slope. The velocity of this jet is set at first order by the gradient of the background barotropic geostrophic contours, which is dominated by the slope of the topography. At statistical equilibrium, an aperiodic cycle is observed. Initially, over a long stable period, an upper-layer jet develops over the shelf break. Once the vertical shear reaches the critical condition for baroclinic instability, the jet becomes unstable and drifts away from the shelf break. The cross-shelf mixing is intrinsically linked with the jet drifting, as most of the meridional flux occurs during this instability period. Investigation of the zonal momentum budget reveals that a strong Reynolds stress divergence inversion across the jet is associated with a drifting event, accelerating one flank of the jet and decelerating the other. The hypothesis that jet drifting may be due to one flank of the jet being more baroclinically unstable than the other, is tested using topographic profiles with variable curvatures. 20150721T150000 20150721T160000 Clark 201 0 Alon Stern, GFDL/Princeton U. ‘Instability and mixing of zonal jets along an idealized continental shelf break’. Clark 201 4f5ihduahg5bhbga9um5b86788@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150728T150000 20150728T160000 Clark 507 0 Georgy Manucharyan, WHOI. ‘Wind-driven halocline dynamics of the Beaufort Gyre’. Clark 507. qbhtrfh7gkrf198ofdo4clhslc@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150804T150000 20150804T160000 Clark 507 0 Alexey Fedorov, Yale. ‘The “super” El Nino of 2014 that never happened and global warming hiatus.’ Clark 507 h6ko2jrbvbfstkfmkb98v7et3c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150811T150000 20150811T160000 Clark 507 0 Wilken-Jon von Appen, Alfred Wegener Institute. ‘Seasonal cycle of mesoscale instability of the West Spitsbergen Current’. Clark 507. ls6o7ub8auc2jkb0g616sie9l4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150818T150000 20150818T160000 Clark 507 0 Trevor McDougall, U. New South Wales, ‘How does the deep ocean manage to achieve upwelling since the interior diapycnal velocity is downwards? and, On the thermodynamics of seawater and frazil ice’, Clark 507 kiuh038rfcblv51dkiso35vac0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150824T140000 20150824T150000 Clark 201 0 Louis Clement, LDEO. ‘Generation of internal waves by eddies impinging at the western boundary of the North Atlantic’. Clark 201. 4fir0ubk8l1knopuj9k02c8rhg@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150825T150000 20150825T160000 Clark 507 0 John Marshall, MIT. ‘Response of the ocean to volcanic eruptions’. Clark 507. 494vrr1rgff3hm9ok3dnii7u0o@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150915T150500 20150915T160000 Clark 507 0 Magdalena Andres, WHOI. ‘Line W and SYNOP: Does Deep Cyclogenesis under Gulf Stream Meanders Influence the DWBC?’. Clark 507 jobcn33na9eg6af2iiso54alf0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150922T150500 20150922T160000 Clark 507 0 X. San Liang, Nanjing Institute of Meteorology. ‘Rigorous causality quantification between time series and applications to ocean data analysis’. Clark 507. nll8o321cqot543r1th5heb75c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20150929T150500 20150929T160000 Clark 507 0 M. Dolores Pérez-Hernández, WHOI. ‘The Canary Basin contribution to the seasonal cycle of the Atlantic Meridional Overturning Circulation at 26ºN’. Clark 507. u4umqbrbhtpeipp8vktes60ics@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography Clark 507 20151006T150500 20151006T160000 the western Nordic Seas under changing atmospheric conditions'. Clark 507 0 Kjetil Våge, U. Bergen. ‘Wintertime convection in the western Nordic Seas under changing atmospheric conditions’. Clark 507 87t795erdc0ok67ga6as2sgk2o@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151013T150500 20151013T160000 Clark 507 0 Kerry Cook, U. Texas Austin. ‘The West African Monsoon: Dynamics of the monsoon jump and recent trends’. Clark 507. mei5e2dv5n7tve4rmlg1f0fkic@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151015T140000 20151015T150000 Clark 201 0 Femke de Jong, Duke. ‘Eddies in the Labrador Sea: Part 2’ Clark 201 br1kst6f32gqppv5fj4969cdhg@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151020T150500 20151020T160000 Clark 201 0 Ali Mashayek, MIT. ‘Topographic Enhancement of Vertical Mixing in the Southern Ocean’. Clark 201 mba735734800bulmbrcdtbpe9g@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151027T150500 20151027T160000 Clark 507 0 Joern Callies, MIT. ‘The Role of Mixed Layer Instabilities in Submesoscale Turbulence’. Clark 507 ia3l3itiv88dpcsbmjid098k84@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151103T150500 20151103T160000 Clark 201 0 PO postdocs, ‘5 minute introductions.’ Clark 201. klvkq3t4adb3j87tla2e1i55to@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151110T150500 20151110T160000 Clark 507 0 Susan Wijffles, CSIRO. ‘Detecting the footprint of anthropogenic climate forcing in the ocean’. Clark 507. h7groh3m547b89r8c6t3joqhuo@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151112T140000 20151112T150000 Clark 201 0 Hedinn Valdimarsson, Marine Research Institute. ‘Oceanography in Icelandic waters’. Clark 201 m5o658pdgk6iqnnhfrkdh1s7to@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151117T150500 20151117T160000 0 Robert Todd, WHOI. ‘Potential vorticity structure in the North Atlantic western boundary current from underwater glider observations’ Clark 507 hrpjs445bd351fal8s4ns2n4vs@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151119T140000 20151119T150000 Clark 201 0 Gaetan Lerisson, Ecole Polytechnique. ‘Effect of mean current on the stability of internal gravity waves’. Clark 201 jujo1pden2a0fc03a4lf43e1f4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151203T140000 20151203T150000 Clark 201 0 Jesse Cusack, National Oceanography Center Southampton. ‘Isopycnal spice variance in the deep ACC’. Clark 201. vavb7716jhdup6bbspjogo9668@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20151208T150500 20151208T160000 Clark 507 0 Viviane Menezes, WHOI. ‘The circulation of the Indian Ocean: Unusual effect of salinity’. Clark 507. u5uvgtcmulcp7lehapbrqe3h6c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160119T150500 20160119T160000 Clark 507 0 Jim Bisagni, U Mass Dartmouth. ‘Salinity variability along the eastern continental shelf of the Unites States and Canada, 1973-2013’. Clark 507. 6ak8j8naldca65bnmt2ehch300@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160126T150500 20160126T160000 Clark 507 0 Maike Sonnewald, MIT. ‘Ocean model utility dependence on horizontal resolution’. Clark 507. gag64q6k4rppibofnun8nmvlno@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160202T150500 20160202T160000 Clark 507 0 Tom Haine, Johns Hopkins. ‘Denmark Strait overflow kinematics’. Clark 507. 5fnr4l7t9jcg1cq0nvcksbs8qg@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160209T150500 20160209T160000 Clark 507 0 Anthony Kirincich, WHOI. ‘The importance of lateral variability on exchange across the inner shelf’. Clark 507 tnsjcpeh5qpej4g2icjak6f0u8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160216T150500 20160216T160000 Clark 507 0 ‘Meet the PO students’. Clark 507. 9m1u51acc0ha532q6dquijc7ds@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160223T150500 20160223T160000 0 Canceled 4ae98dvnh95t652m37nklmqlfc@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160301T150500 20160301T160000 0 Debasis Sengupta, Indian Inst. Sci. ‘Monsoon rain, river runoff, and Bay of Bengal salinity’. Clark 507 s4j6kjemhi47ev09qa7prtjtm0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160307T110000 20160307T120000 Clark 507 0 Shota Katsura, U Tokyo. ‘Structure and variation of upper ocean salinity in the subtropical Pacific: North Pacific tropical water and barrier layer.’ Clark 507. 22hu9k0u8jjgnrpu4lg2gkdiag@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160308T150500 20160308T160000 Clark 507 0 Joseph D’Addezio, U. South Carolina. ‘Air-sea interactions in the Seychelles-Chagos thermocline ridge’. Clark 507. r7o3ktjdrjovecuut3l7vomdk0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160315T150500 20160315T160000 Carriage House 0 ‘What are we up to? Talks by three PO faculty’. Carriage House poi0rvbl4kq6oo9cemk8l7is7c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160322T150500 20160322T160000 Clark 507 0 Steve Lentz, WHOI. ‘The Middle Atlantic Bight cold pool revisited.’ Clark 507. 523p1g4f1vs8mkp1i8dv84q2n8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160405T150500 20160405T160000 Clark 507 0 Anna FitzMaurice, Princeton U. ‘The Southern Ocean overturning circulation and its relation to Antarctic sea ice extent’. Clark 507. lfgcefe5ln0kol3j3am3qd8l3k@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160412T150500 20160412T160000 Clark 507 0 Ken Brink, WHOI. ‘Cooling, winds and eddies over the continental shelf’. Clark 507. q9ls49jii8h2tm8pej80hlu6rk@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160419T150500 20160419T160000 Clark 201 0 Mike Spall, WHOI. ‘Offshore decay scale of cold upwelled SST’. Clark 201 549mtpoqbotab2bts869uq6fog@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160425T140500 20160425T150000 Clark 201 0 Matthew Alford, SIO. ‘Observing the generation, propagation and dissipation of internal waves in the ocean.’ Clark 201. 3gs0l1b0k3j83gt5h6gg0gdp2o@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160426T150500 20160426T160000 Carriage House 0 Hyodae Seo, WHOI. ‘Eddy-driven air-sea interaction in the California Current System’. Carriage House. o9fe33h9rkfjhve2qpvaqem2bo@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160503T150500 20160503T160000 Clark 507 0 Susan Wijffels, CSIRO. ‘Towards understanding the Indonesian Throughflow and its variability’. Clark 507. hltebk9pl3i849e9kbv2cq7di0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160510T150500 20160510T160000 Clark 507 0 Luca Centurioni, SIO. ‘Near-surface circulation of the North West Pacific Ocean and interaction with the China Seas’. Clark 507 hq3t95rbns58me6c0dcqc97ei8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160517T150500 20160517T160000 Clark 201 0 Nick Beaird, WHOI. ‘Fingerprints of ocean-glacier interaction around Greenland’. Clark 201. v0tonlt37us3kd0pv7l1mquob4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160519T140500 20160519T150000 Clark 201 0 Charlie Eriksen, U. Washington. ‘Deepglider observations of full-depth flow structure from Bermuda to the Western Boundary’. Clark 201. 3j02b94am2l3qceptmr4qt26n0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160524T150500 20160524T160000 Clark 201 0 Sarah Purkey, LDEO. ‘Regional and global rates of ocean mass addition between 1996-2006 from a full depth sea level rise budget’. Clark 201. 9742fscbf75i0m39vma3775v9k@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160526T140500 20160526T150000 Clark 201 0 Dan Amrhein, MIT/WHOI. ‘Towards ocean state estimation at the Last Glacial Maximum’. Clark 201 311aue6cmfctjj86m9soa7grfk@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160531T150500 20160531T160000 Clark 507 0 Ke Chen, WHOI. ‘Heat balance and temperature variability in the Northeast US coastal ocean’. Clark 507. 6csf0g15afmesb3h2b8lpmpp7k@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160602T140500 20160602T150000 Clark 201 0 Emily Shroyer, OSU. ‘Seasonal connections between Nares Strait and Petermann Glacier: Linking the sea ice, ocean, and ice shelf’. Clark 201. 93f9r7o5941q3i16b4f896k94g@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160607T140500 20160607T150000 Clark 507 0 Ben Harden, SEA / WHOI. ‘Upstream sources of the Denmark Strait Overflow: Observations from a high-resolution mooring array’. Clark 507 gkv4r8gf8a4et6b0j3gv6v97es@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160613T140500 20160613T150000 Clark 201 0 Aneesh Subramanian, Oxford. ‘Stochastic multi-scale atmospheric modeling: A route to improved forecasts for the tropics’. Clark 201 3raohdtt0amh0qdepqmn6fogvc@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160614T150500 20160614T160000 Clark 507 0 Allan Clarke, FSU. ‘El Nino and La Nina freshwater jets in the Western Equatorial Pacific’. Clark 507 siiejfvsuusc696b9mn5d9548c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160621T150500 20160621T160000 Clark 507 0 Eleanor Frajka-Williams, NOC Southampton. ‘Reconciling observations of the Atlantic MOC variability’. Clark 507. 09kcvbspgd4itfcvcjifak8hc8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160628T150500 20160628T160000 Clark 507 0 Amy Bower, WHOI. ‘The Charlie-Gibbs Fracture Zone: A crossroads of the Atlantic Meridional Overturning circulation’. Clark 507. bn7m1k9vk79tp9m7e1htbncfe8@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160705T150500 20160705T160000 0 Cancelled up0ef34ufndv9scjuf9klh5a40@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160707T140500 20160707T150000 Clark 201 0 Ivan Ovsyannikov, U. Bremen. ‘Cubic homoclinic tangencies and resonances in two-dimensional symplectic maps.’ Clark 201. n47nbc41hk0kdqqln6kmpq62j0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160712T150500 20160712T160000 Clark 507 0 Dujuan Kang, Rutgers. ‘Understanding the energetics and variability of the Gulf Stream and associated eddies’. Clark 507. fc9e3vli5rib7om4li6igbe748@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160719T150500 20160719T160000 Clark 507 0 Leo Maas, NIOZ. ‘Wave attractors.’ Clark 507. s9cm0kk8jtbvockni5mtqlqehc@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160726T150500 20160726T160000 Clark 201 0 Ruth Musgrave, MIT. ‘Tidally driven mixing: breaking lee waves, hydraulic jumps and the influence of subinertial internal tides’. Clark 201 hdf4esh5ft68j02h66btncki88@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160802T150500 20160802T160000 Clark 507 0 Robert Nazarian, Princeton U. ‘Internal wave scattering in idealized and realistic continental slope canyons’. Clark 507 p5nnqgmsclu5vo0vka0bs9vguo@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160809T150500 20160809T160000 0 Alexey Fedorov, Yale. ‘The Pacific meridional overturning circulation (PMOC) in past warm climates’. Clark 507. 9gdjbotdmi1p2u08hol3ikuj6s@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160811T140500 20160811T150500 Clark 201 0 Dhruv Balwada, FSU. ‘A lagrangian view of oceanic turbulence’. Clark 201 jvp05jffnc5hpifussa90sq1i4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160816T150500 20160816T160000 Clark 507 0 Georgy Manucharayan, Cal Tech. ‘Emergence of a multi-decadal eddy-memory mode and its impacts on the Beaufort Gyre variability’. Clark 201 tulevvipqa4u7sq6fdi56gq1uc@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160818T140500 20160818T150500 Clark 201 0 Rui Xin Huang, WHOI. ‘Adiabatic motions in the ocean and extended isopycnal analysis’. Clark 201 gci0lam9v6bhe39fj9geiqplsk@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160823T150500 20160823T160000 Clark 507 0 John Toole, WHOI. ‘Moored observations of the Deep Western Boundary Current in the northwest Atlantic: 2004-2014’. Clark 507. cul0rka7hkld97rbptua1p4450@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160830T150500 20160830T160000 Clark 507 0 Cancelled a1fg33o5c5j0q16149aamnv5pg@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160906T150500 20160906T160000 Clark 507 0 Alain de Verneil, Mediterranean Inst. Oceanography. ‘Biological tracer structure in the surface ocean: Effects of mesoscale forcing from the regional to sub-mesoscale’. Clark 507 hnv2cijmd9pglo4enh8kaghedc@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160913T150500 20160913T160000 Clark 507 0 Malcolm Scully, WHOI. ‘Observations of the transfer of energy and momentum to the oceanic surface boundary layer beneath breaking waves.’ Clark 507. cs642cgnq9ccod34j0oo1ageg4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160920T150500 20160920T160000 Clark 507 0 Viviane Menezes, WHOI. ‘Accelerated freshening of Antarctic Bottom Waters over the last decade (2007-2016) in the Southern Indian Ocean’. Clark 507 1s62fulcc4qrfrtkt5ajr7624g@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20160927T150500 20160927T160500 Clark 507 0 Raffaele Ferrari, MIT. ‘A model of the ocean overturning circulation with two closed basins and a reentrant channel’. Clark 507 u7d38v147utkgtt0vr2lcjgffc@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161004T150500 20161004T160500 Clark 507 0 Mohamad M. Nasr-Azadani, UCSB. ‘Gravity currents in sheared and stratified ambients: Numerical Simulations and vorticity modeling’. Clark 507 j9on34pntp5s1upjojfldlb080@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161011T150500 20161011T160500 Clark 507 0 Jian Zhao, WHOI. ‘Mesoscale process in the Iceland Basin’. Clark 507 di719bd44rdc10pg1jv5hlmvhg@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161013T140500 20161013T150500 0 Masatoshi Miyamoto, U. Tokyo. ‘Characteristics and mechanisms of deep mesoscale variability south of the Kuroshio Extension’. Clark 201 rdql31vrbpqiqslenbmvlupcj4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161018T150500 20161018T160500 Clark 507 0 Chris Piecuch, Atmospheric and Environmental Research. ‘Inter annual sea level changes on the North American Northeast Coast: Influence of local atmospheric forcing’. Clark 507 dodrmf8dhrhm3e1ubac371jveo@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161025T150500 20161025T160500 Clark 507 0 Karl Helfrich, WHOI. ‘Instabilities of internal solitary waves’. Clark 507. bpof1cjcge4mclu6vhgipc8hko@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161101T150500 20161101T160500 Clark 201 0 Henrik Soiland, Inst. Marine Research. ‘The Lofoten Basin Eddy – a permanent feature of the Norwegian Sea’. Clark 201 rjr0jhqqa4vuokkj0ktj5bcago@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161108T150500 20161108T160500 Clark 507 0 Xiaolin Zhang, FSU. ‘On the Dynamical Relationship Between Equatorial Pacific Surface Currents, Zonally-Averaged Equatorial Sea Level and El Nino Prediction’. Clark 507 201i0785oebclspj16qn89c9l0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161115T150500 20161115T160500 Clark 507 0 Sanjiv Ramachandran, U. Mass Dartmouth. ‘Submesoscale processes in shallow, stratified layers: observations from the Bay of Bengal during the winter monsoon’. Clark 507 qsqa1mgrgh6pq3droobvhhr4g4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161122T150500 20161122T160500 Clark 507 0 Cancelled qn510o9eftfon0877oph272tj0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161129T150500 20161129T160500 Clark 507 0 Mathieu Dever, Dalhousie U. ‘Investigating the dynamics of a buoyant coastal current using observations and a simple conceptual model’. Clark 507. 1vqdas7rpailo65d73688bl5c4@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161206T150500 20161206T160500 Clark 201 0 Terry Joyce, WHOI. ‘On the slowing of the Deep Western Boundary Current southeast of Cape Cod: 2004-2014’. Clark 201 sji490aa80k4cd6l4v0ttdtk38@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161213T150500 20161213T160500 0 Cancelled 41na9ve8oeu1kk3je5sdgjnagg@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161220T150500 20161220T160500 0 Cancelled nhrv0urv9c3lpmtbhugav1qbio@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20161227T150500 20161227T160500 0 Cancelled dkrhgngl4lmoe03n3bqn1s1ssg@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20170103T150500 20170103T160500 Clark 507 0 Cancelled n2a24r058dp3p713notb7hrm2g@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20170110T150500 20170110T160500 Clark 507 0 Young-Oh Kwon, WHOI. ‘North Atlantic Blocking Variability and Role of the Atlantic Multidecadal Oscillation’. Clark 507 diijpup835rtbtl3bb36rfguso@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography Lateral mixing by mesoscale eddies is widely recognized as a crucial mechanism for the global ocean circulation and the associated heat/salt/tracer transports. The Salinity in the Upper Ocean Processes Study (SPURS) confirmed the importance of eddy mixing for the surface salinity fields even in the center of the subtropical gyre of the North Atlantic. We focus on the global salinity maxima due to their role as indicators for global changes in the hydrological cycle as well as providing the source water masses for the shallow overturning circulation. We introduce a novel approach to estimate the contribution of eddy mixing to the global sea surface salinity maxima. Using a global 2D tracer experiments in a 1/10 degree MITgcm setup driven by observed surface velocities, we analyze the effect of eddy mixing using a water mass framework, thus focussing on the diffusive flux across surface isohalines. This enables us to diagnose temporal variability on seasonal to inter annual time scales, revealing regional differences in the mechanism causing temporal variability.Sensitivity experiments with various salinity backgrounds reveal robust inter annual variability caused by changes in the surface velocity fields potentially forced by large scale climate. 20170117T150500 20170117T160500 Clark 507 0 Julius Busecke, LDEO. ‘Temporal variability in eddy mixing in the global subtropics’. Clark 507. 0c6arp1d01o746e526qphr8ntk@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20170119T140500 20170119T150500 Clark 201 0 Carina Bringedal, U. Bergen. ‘Idealized models for wind driven variations in an overturning circulation’. Clark 201. b2cucnmv3pe11dr4k3lgc1nj1c@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20170124T150500 20170124T160500 Clark 507 0 David Nieves, WHOI. ‘Non-hydrostatic, rapidly rotating and stably stratified flows’. Clark 507 nol9amv4bcuebgiunj177dn9q0@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20170131T150500 20170131T160500 Clark 507 0 Rhys Parfitt, WHOI. ‘To what extent do oceanic frontal zones affect mid-latitude weather and climate?’. Clark 507. t5ke92ulk1dnd2rbqjqu41l4as@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20170207T150500 20170207T160500 Clark 507 0 Tom Rossby, URI. ‘Currents, fluxes and the MOC between Cape Farewell and Scotland’. Clark 507. me9klcq795qiesh92ut2brjc4g@google.com 20180503T083658Z WHOI Seminar | Physical Oceanography 20170214T150500 20170214T160500 Clark 507 0 Kate Lowry, WHOI. ‘The influence of sea ice and hydrography on phytoplankton bloom dynamics in the Chukchi Sea’. Clark 507 usev2apv2hqk7s86sv039o2bf4@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170216T140500 20170216T150000 Clark 201 0 Steingrimur Jonsson, U. Akureyri. ‘Study of water exchange, circulation and oxygen levels in a small fjord in Iceland following the death of 52 thousand tons of herring’. Clark 201 hn0vrl3v3khlk6nb701l05d7ac@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170221T150500 20170221T160500 Clark 507 0 Matthew Falder, U. Birmingham. ‘Sharp transition from internal waves to stratified turbulence observed in seismic reflection images’. Clark 507 vt5avemev1nv2u36npr0hkdqg4@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography The Brewer-Dobson circulation, the meridional overturning of mass in the stratosphere, is important for the distribution of gases in the stratosphere, such as ozone and water vapor, which impact surface climate. I will present a theory that relates the ideal tracer "age of air" to this circulation strength. Age can be determined from certain trace gases, and I have applied the theory to obtain the first data-based estimate of the global meridional overturning circulation of the stratosphere. When I compare this to models and reanalysis data, I find substantial disagreement. I will then show how age of air provides enough information to determine the full circulation by deriving a quantitative relationship between the age distribution and the adiabatic component of the circulation. 20170228T150500 20170228T160500 Clark 507 0 Marianna Linz, MIT/WHOI. ‘A theory for calculating the strength of the stratospheric circulation from age’. Clark 507 lora794199g0vou53mqqarjl7k@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170307T150500 20170307T160500 0 Jake Gebbie, Irina Rypina and Amala Mahadevan, WHOI. From Circulation to Mixing — Some Vignettes of Physical Oceanography. Clark 201 di3t8ip1keifimq60bi5cjnl2s@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170314T150500 20170314T160500 Clark 507 0 Bernadette Sloyan, CSIRO. ‘Sustained Ocean Observations: the role of the OOPC (Ocean Observations Physics and Climate panel)’. Clark 507 oma9kf030v4ftord9je507b98o@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170321T150500 20170321T160500 Clark 507 0 Cancelled ff3a92mf45iu10cje3af9r9mqo@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170328T150500 20170328T160500 Clark 507 0 Sylvia Cole, WHOI. ‘Momentum transfer in the Arctic marginal ice zone’. Clark 507 9h0jovectfkaab2napoa62gnkk@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170404T150500 20170404T160500 Clark 507 0 Joseph LaCasce, University of Oslo. ‘The vertical structure of Rossby waves’. Clark 507 89gv4i0rhdeo0bse4sf5f2elmg@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170411T150500 20170411T160500 Clark 507 0 Thomas Kilpatrick, SIO. ‘Satellite observations of convection–wind coupling’. Clark 507 j6njfjc73iuk9abfq9qde001tg@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170418T150500 20170418T160500 Clark 507 0 Allan Clarke, FSU. ‘On the relationship of near-surface flow, Stokes drift and wind stress’. Clark 507 dcvaefdedl9v3knqs5dl1celbo@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography The Intertropical Convergence Zone (ITCZ), also known as the doldrums, is the area just north of the equator where the northeast and southeast trade winds converge. We discuss the role of the ocean in pushing the ITCZ northwards away from the equator and in modulating its meridional migrations. 20170425T150500 20170425T160500 Clark 507 0 John Marshall, MIT. ‘Inter-hemispheric asymmetries in climate: Oceans and the Inter-tropical Convergence Zone’. Clark 507 20170502T150500-02mm6q7uplh244fa4f7at8slfk_R20170502T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170502T150500 20170502T160500 Clark 507 0 Jack Whitehead, WHOI. ‘Dimensions of continents and oceans – water has carved a perfect cistern’. Clark 507 02mm6q7uplh244fa4f7at8slfk@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170502T150500 20170502T160500 Clark 507 FREQ=WEEKLY;UNTIL=20170502T190459Z;BYDAY=TU 0 OPEN 02mm6q7uplh244fa4f7at8slfk_R20170502T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170502T150500 20170502T160500 20170502T150500 20170509T150500 20170516T150500 Clark 507 FREQ=WEEKLY;UNTIL=20170530T190459Z;BYDAY=TU 0 Reserved. 20170509T150500-02mm6q7uplh244fa4f7at8slfk_R20170502T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170509T150500 20170509T160500 Clark 507 0 Viviane Menezes, WHOI. ‘Air-Sea Interaction, Water Mass Formation and Ocean Circulation — From warm-salty (Red Sea) to cold-fresh waters (Southern Ocean)’. Clark 507 20170516T150500-02mm6q7uplh244fa4f7at8slfk_R20170502T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170516T150500 20170516T160500 Clark 507 0 Robert Todd, WHOI. ‘New views of the Gulf Stream’. Clark 507 20170523T150500-02mm6q7uplh244fa4f7at8slfk_R20170502T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170523T150500 20170523T160500 Clark 507 0 Nick Beaird, WHOI. ‘Production, Export, and Oceanic Impacts of Greenland’s glacial meltwater’. Clark 201 02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170530T150500 20170530T160500 20170613T150500 20170627T150500 20170704T150500 20170711T150500 20171226T150500 Clark 507 FREQ=WEEKLY;UNTIL=20171226T200500Z;BYDAY=TU 0 OPEN 20170530T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170530T150500 20170530T160500 Clark 507 0 Ruth Musgrave, MIT. ‘ The generation of Rossby waves and wake eddies by small islands’. Clark 507 20170606T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170606T150500 20170606T160500 Clark 507 0 Christopher Piecuch, AER. ‘A Bayesian Perspective on Recent Mean Sea Level Changes along the United States East Coast’. Clark 507 0o6l8uh32k8iu2p22cd5ggjhks@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography I will demonstrate the tools that allow to perform analytic, i.e. mathematically rigorous, proofs of chaos in various models. This includes the proof of the birth of the Lorenz attractor in the Lorenz model. In future, the further development of such tools and criteria will be very useful for the study of applied problems. 20170608T140500 20170608T150500 Clark 201 0 Ivan Ovsyannikov, U. Bremen. ‘Analytic proof of chaotic regimes in dynamical models’. Clark 271 20170613T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170613T150500 20170613T160500 Clark 201 0 Georgy Manucharyan, CalTech. ‘The role of mesoscale eddies in the Ekman-driven variability of the Beaufort Gyre’. Clark 201 20170620T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography Observations show that the upper ocean has been warming since the 1970s, and it is usually attributed to global warming that is associated with the increasing concentration of greenhouse gases in the atmosphere. The global ocean is implicitly considered as a passive heat reservoir, and it is assumed that the ocean was in equilibrium with the atmosphere before the anthropogenic global warming had occurred. However, the global ocean is a dynamically active heat exchanger involving processes of various temporal and spatial scales and has a memory of thousands of years. Not only the heat exchange between ocean and atmosphere but the vertical heat flux passing the lower face of the upper ocean contribute to the changes in the observed upper ocean heat content. In this talk, I will present the mean and the bidecadal change of the ocean vertical heat flux as well as the related physical processes from a dynamically consistent and data-constrained ocean state estimate - ECCO (Estimating the Circulation & Climate of the Ocean). Implications of the vertical redistribution of ocean heat on the changes of the upper and deep ocean heat contents, particularly the recently much-debated global warming "hiatus", will also be discussed. 20170620T150500 20170620T160500 Clark 507 0 Xinfeng Liang, U. South Florida. ‘Vertical Redistribution of the Global Oceanic Heat Content’. Clark 507 20170627T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170627T150500 20170627T160500 Clark 507 0 Alison Macdonald, WHOI. ‘A 2011-2015 Fukushima Tracer Perspective on North Pacific Mode Water Circulation’. Clark 507 lkesstjn8205ioc4aknguoemgo@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170706T020500 20170706T030500 0 Takashi Ijichin, University of Tokyo. ‘Evaluation of mixing coefficients in the deep ocean’. Clark 201 20170711T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170711T150500 20170711T160500 Clark 507 0 Tom Farrar, WHOI. ‘TBD’. Clark 507 20170718T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170718T150500 20170718T160500 Clark 507 0 Andreas Thurnherr, LDEO. ‘TBD’. Clark 507 uuvh70g3tlchlo4hdgv7ckruvs@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170720T140500 20170720T150500 0 Lisa Beal, U. Miami. ‘TBD’. Clark 201. bkm5rpdofo7qrkm5dlv8r374io@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170727T140500 20170727T150500 Clark 201 0 Christopher Wolfe, Stony Brook University. ‘TBD’. Clark 201 20170801T150500-02mm6q7uplh244fa4f7at8slfk_R20170530T190500@google.com 20180503T083659Z WHOI Seminar | Physical Oceanography 20170801T150500 20170801T160500 Clark 507 0 Alexey Fedorov, Yale University. ‘TBD’. Clark 507